diff options
Diffstat (limited to 'examples/c/example1.c')
-rw-r--r-- | examples/c/example1.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/examples/c/example1.c b/examples/c/example1.c new file mode 100644 index 0000000..5c776a8 --- /dev/null +++ b/examples/c/example1.c @@ -0,0 +1,115 @@ +/* ---------------------------------------------------------------------------- + libconfig - A library for processing structured configuration files + Copyright (C) 2005-2010 Mark A Lindner + + This file is part of libconfig. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License + as published by the Free Software Foundation; either version 2.1 of + the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, see + <http://www.gnu.org/licenses/>. + ---------------------------------------------------------------------------- +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <libconfig.h> + +/* This example reads the configuration file 'example.cfg' and displays + * some of its contents. + */ + +int main(int argc, char **argv) +{ + config_t cfg; + config_setting_t *setting; + const char *str; + + config_init(&cfg); + + /* Read the file. If there is an error, report it and exit. */ + if(! config_read_file(&cfg, "example.cfg")) + { + fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg), + config_error_line(&cfg), config_error_text(&cfg)); + config_destroy(&cfg); + return(EXIT_FAILURE); + } + + /* Get the store name. */ + if(config_lookup_string(&cfg, "name", &str)) + printf("Store name: %s\n\n", str); + else + fprintf(stderr, "No 'name' setting in configuration file.\n"); + + /* Output a list of all books in the inventory. */ + setting = config_lookup(&cfg, "inventory.books"); + if(setting != NULL) + { + int count = config_setting_length(setting); + int i; + + printf("%-30s %-30s %-6s %s\n", "TITLE", "AUTHOR", "PRICE", "QTY"); + + for(i = 0; i < count; ++i) + { + config_setting_t *book = config_setting_get_elem(setting, i); + + /* Only output the record if all of the expected fields are present. */ + const char *title, *author; + double price; + int qty; + + if(!(config_setting_lookup_string(book, "title", &title) + && config_setting_lookup_string(book, "author", &author) + && config_setting_lookup_float(book, "price", &price) + && config_setting_lookup_int(book, "qty", &qty))) + continue; + + printf("%-30s %-30s $%6.2f %3d\n", title, author, price, qty); + } + putchar('\n'); + } + + /* Output a list of all movies in the inventory. */ + setting = config_lookup(&cfg, "inventory.movies"); + if(setting != NULL) + { + unsigned int count = config_setting_length(setting); + unsigned int i; + + printf("%-30s %-10s %-6s %s\n", "TITLE", "MEDIA", "PRICE", "QTY"); + for(i = 0; i < count; ++i) + { + config_setting_t *movie = config_setting_get_elem(setting, i); + + /* Only output the record if all of the expected fields are present. */ + const char *title, *media; + double price; + int qty; + + if(!(config_setting_lookup_string(movie, "title", &title) + && config_setting_lookup_string(movie, "media", &media) + && config_setting_lookup_float(movie, "price", &price) + && config_setting_lookup_int(movie, "qty", &qty))) + continue; + + printf("%-30s %-10s $%6.2f %3d\n", title, media, price, qty); + } + putchar('\n'); + } + + config_destroy(&cfg); + return(EXIT_SUCCESS); +} + +/* eof */ |